// pages/exercise/exercise.js
const app = getApp();
Page({

  /**
   * 页面的初始数据
   */
  data: {
    exercise_questions: [],
    loading: true,
    exercise: {}
  },
  pull_questions: function(){
    app.client.start_answer_exercise({exercise_id: this.exercise_id})
    .then(res=>{
      console.log("pull questions");
      console.log(res);
      this.setData({ exercise: res.data.exercise});
      let questions = res.data.exercise_questions;
      for(var i=0;i<questions.length;i++){
        if (questions[i]["question_type"]==3){
          let null_inputs=[];
          for (var j = 1; j<= questions[i]["multi_count"];j++){
            var user_answer = questions[i]["user_answer"].filter(answer=>answer.choice_id==j)[0]||{};
            console.log(user_answer);
            null_inputs.push({choice_id:j, answer_text:user_answer.answer_text||""});
            console.log(null_inputs);
          }
          questions[i]["null_inputs"] = null_inputs;
          console.log(questions);
        }
      }
      this.setData({ exercise_questions: questions});
      console.log(this.data);
    }).catch(console.error)
  },
  answer_null_question: function ({ detail: { value }, currentTarget: { dataset } }){
    console.log("answer_main_question");
    console.log(value);
    console.log(dataset);
    app.client.answer_exercise_question({ question_id: dataset.question_id, exercise_choice_id:dataset.exercise_choice_id,  answer_text: value })
      .then(res => { console.log("answer_main_question"); console.log(res); })
      .catch(error => {
        console.error(error);
        wx.showToast({
          title: error.toString(),
          icon: "none"
        })
      });
  },
  answer_main_question: function ({ detail: { value }, currentTarget: { dataset }}){
    console.log("answer_main_question");
    console.log(value);
    console.log(dataset);
    app.client.answer_exercise_question({ question_id: dataset.question_id, answer_text: value })
      .then(res => { console.log("answer_main_question"); console.log(res); })
      .catch(error => {
        console.error(error);
        wx.showToast({
          title: error.toString(),
          icon: "none"
        })
      });
  },
  answer_choice_question: function({detail: {value}, currentTarget: {dataset}}){
    console.log("answer_question");
    console.log(value);
    console.log(dataset);
    app.client.answer_exercise_question({ question_id: dataset.question_id, exercise_choice_id: value})
    .then(res=>{console.log("answer_question");console.log(res);})
    .catch(error=>{
      console.error(error);
      wx.showToast({
        title: error.toString(),
        icon: "none"
      })
    });
  },
  save_exercise: function({show_loading=true}={}){
    if(show_loading){
      wx.showLoading({
        title: '请稍候',
      });
    }
    app.client.save_exercise({exercise_id: this.exercise_id, complete: wx.hideLoading})
    .then(res=>{
      console.log("保存答案");
      console.log(res);
      if(show_loading){
      wx.showToast({
        title: "保存成功",
      });
      }
    }).catch(console.error)

  },
  commit_exercise: function(){
    wx.showModal({
      title: '确认',
      content: '交卷后不可更改，确定交卷吗？',
      success: res=>{
        if(res.confirm){
          app.client.save_exercise({ exercise_id: this.exercise_id})
          .then(
            ()=>{
            app.client.commit_exercise({exercise_id: this.exercise_id})
            .then(res=>{
              console.log("交卷");
              console.log(res);
              wx.navigateBack({
                delta:1
              })
              wx.showToast({
                title: res.data.message
              })
            }).catch(console.error);
          }).catch(console.error);
        }
      }
    })
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    this.exercise_id = options.exercise_id;
    this.pull_questions();
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {

  },

  onError: function(e){
    console.error(e);
  },
  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {
    this.save_exercise({show_loading: false});
  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {

  }
})